{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "a184b9b4",
   "metadata": {},
   "source": [
    "# 21-17 · Рост сложности и волны\n",
    "\n",
    "Практика к разделу [«Как растёт сложность игры»](../../site/chapters/glava-21/21-17-slozhnost-i-volny.html)."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "de630741",
   "metadata": {},
   "source": [
    "## Цель\n",
    "\n",
    "Проверить, что формулы сложности растут вместе со счётом, но не уходят за разумные границы."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "5bf02be5",
   "metadata": {},
   "source": [
    "## Рабочий пример"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "7dc610c3",
   "metadata": {},
   "outputs": [],
   "source": [
    "BASE_SPAWN_INTERVAL = 1.10\n",
    "MIN_SPAWN_INTERVAL = 0.35\n",
    "SPAWN_FACTOR = 0.00055\n",
    "\n",
    "MAX_SPEED_BONUS = 0.9\n",
    "SPEED_FACTOR = 0.00045\n",
    "\n",
    "\n",
    "def interval_poyavleniya_vraga(schet):\n",
    "    return max(MIN_SPAWN_INTERVAL, BASE_SPAWN_INTERVAL - schet * SPAWN_FACTOR)\n",
    "\n",
    "\n",
    "def mnozhitel_skorosti_vraga(schet):\n",
    "    return 1.0 + min(MAX_SPEED_BONUS, schet * SPEED_FACTOR)\n",
    "\n",
    "\n",
    "for schet in (0, 500, 5000):\n",
    "    print(schet, \"->\", round(interval_poyavleniya_vraga(schet), 3), round(mnozhitel_skorosti_vraga(schet), 3))"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "2000efff",
   "metadata": {},
   "source": [
    "## Проверка результата"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "342386e0",
   "metadata": {},
   "outputs": [],
   "source": [
    "assert interval_poyavleniya_vraga(0) == BASE_SPAWN_INTERVAL\n",
    "assert interval_poyavleniya_vraga(100_000) == MIN_SPAWN_INTERVAL\n",
    "assert interval_poyavleniya_vraga(500) < interval_poyavleniya_vraga(0)\n",
    "\n",
    "assert mnozhitel_skorosti_vraga(0) == 1.0\n",
    "assert mnozhitel_skorosti_vraga(100_000) == 1.0 + MAX_SPEED_BONUS\n",
    "print(\"Верно: интервал появления уменьшается, скорость растёт, обе формулы ограничены.\")"
   ]
  }
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